3. determining the ph of substances such as purple grape juice and catsup using test strips can be difficult. why

The human body stores chemical energy from digested food. some of the chemical energy is converted into mechanical energy when the body moves. which statement best supported by this information

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.